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    Author(s): Leo A. Isaac
    Date: 1956
    Source: USDA Forest Service PNW Old Series Research Paper No. 16: 1-48
    Publication Series: Research Paper (RP)
    Station: Pacific Northwest Research Station
    PDF: View PDF  (3.8 MB)


    During the early 1930's, as use of the logging truck and tractor increased, a form of partial harvesting mature and overmature virgin stands developed in the Douglas-fir region (2). The cutting pattern varied from taking a few scattered high-grade trees per acre to clear cutting small areas. Partial harvesting caught on quickly because at that time only the high-grade trees could be logged at a reasonable margin of profit. This was a new procedure in the Douglas-fir type, and its effect on the future stand was unknown.

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    Isaac, Leo A. 1956. Place of partial cutting in old-growth stands of the Douglas-fir region. USDA Forest Service PNW Old Series Research Paper No. 16: 1-48

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